.browser-mask {
  width: 100%;
  height: 100%;
  box-sizing: border-box;
  padding: rem(16) rem(30) 0 rem(100);
  background: transparent;
  position: fixed;
  top: 0;
  left: 0;
  z-index: 2000;
  &.mask-bg {
    background: rgba(0, 0, 0, 0.7);
  }
}
